TTIP Study by Stefan Beck and Christoph Scherrer (2014)

"The currently negotiated transatlantic free trade agreement between the European Union and the United States brings risks in several respects. The welfare effects propagated  by the proponents are, even in the event of their occurrence, not significant and are also likely to be unevenly distributed."

More (German): http://www.boeckler.de/pdf/p_arbp_303.pdf